John w



(No Model.) j J. W. VAN DYKB.

, l STEAMGPNBmlo. J No. 276,735. j Patented`lVIaJy1r1883.

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. UNITED I STATES PATENT Ormea,

JoHN w. vAN DYKE, or"

BROOKLYN, NEW YORK.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 276,735, dated May 1, 1883. Application tiled March 12, 1883. (No model.)

To all whom it may concern Be it known that I, JOHN W. VAN DYKE, of Brooklyn, in the county of Kings and State of New York, have invented certain Improvements in-Steam-Generators, of whic-h the following is a specification.-

'lhis invention comprises certain novel combinations of parts whereby is provided a sec` tional Steam-generat0r in which provision is made not only for the efficient production ot' steam, but for the equalization of water throughout the tubes, for the facile removal of sediment, for the effective heating of the waterpreparatory to its transmission to the steamdrum or separating'chamber, for the ready separation of the steam from the water, and for the rapid and determinate circulation of the water, my said invention also securingM the further advantages of aneffective applica tion of the ilameand hot gaseous products of combustion to the watertubes; also, of a strong and secure support to the front of theV boiler, combined with comparative immunity from burning out,7 so termed, by the direct action of the ame from thefiirebox upon the adjacent portions ofthe apparatus.

Figure lis a front-view and partial sectional view of a steam-generator constructed according to my said invention. Fig. 2 isa vertical longitudinal sectional `view thereof'. Fig. 3 is a rear view thereof with certain portions removed the better to show the internal parts. Fig.` 4 is a similardetachedsectional view representing one part ofthe apparatus; and Fig. 5 is a detail'view, showing a feature not illus-V trated is the preceding iigures.

Each end ot the boiler is composed of oblong hollow castings A. Each ot' these castings is divided by vertical partitions a into compartments corresponding in number to the number ot' vertical series otl water-tubes included in the apparatus. Each of these partitions a reachesnearly but not quiteto the bottom of the interior of the castings or chamber, thereby leaving :rn opening, b, below said partition. Each casting therefore is subdivided into a number of internal compartments, and all the said compartments of each casting are connected at bottom by 1n cans of the openings or passages B. Formed in the outside of each casting A, opposite the uppermost of each of the internal compartments aforesaid, is an opening or hand-hole, c, and formed at the opposite or inner side of each of said compartments are two openings, one above the watentubes B. The openings or hand-holes c ail'ord access to the ends of the water-tubes B when the said ends are thrust into place, and thereby enable the said ends to be securely fastened in position and attached to the casting in direct communication with the compartments. When the -boiler is in use and opend of the lowermost tube B connected with said casting. The tubes B are arranged in zigzag fashion, as represented in Fig. 2, two adjacent ends of two adjacent tubes being attached to one casting A, and alternating, sol

that water passing upward-as, for example, from the-lowermost ot' the tubes B-will pass into the adjacent compartments of the casting,

Vthence upward to the adjacent end ofthe tube -next above, thence backward through said `tube to the next casting at the'rearmost end `of the apparatus, thence upward through the adjacent compartment thereof to the tube B p next above, and so on from one tube to another in the vertical series until it reaches the uppermost of the said tubes, and thence into the separating-chamber or steam-drum, as herein- Aafter explained. Inasmuch as the compartments of each casting A communicate with each other by means ot' the openings or passages, it follows that as concerns the tubes `of any given level the water therein will be Aat the same level as that in all.

Furthermore, inasmuch as the portions a. of the aforesaid compartments extend downward below the level of the lowest ofthe tubes B connect- V ing therewith, it follows that water-spaces are formed at the front and back of the boiler, which, by the impact of the iiame and hot gaseousproducts ofcombustion and by the heat ICO ss other, and designed to receive the ends of the ybetween the tubes A toward the upper part of the apparatus is another similar partition, l),

of like material, which has in front of it an opening, Bit.

The apparatus is in practice surrounded by the usual brick shell or casing, which, being well known in connection with tubular boilers, need not be here specifically described.

As the dame and hot gaseous products of combustion pass from the tire-box E to a suitable uptake at F they are caused to traverse in a zigzag direction by means of the horizontal partitions C andD aforesaid, and are therebykept in contact with the tubes B along substantially the entire length of said tubes, and for a period sufficient to enable them to give up the greatest available portion of their heat to the said tubes for the generation of steam.

G is what I term the steam-drum 7 or separating-chamber,77 which may be of cylindrical form, and which is placed centrally above that portion of the boiler composed of the tubes B, and which has at its rearm ost end a transverse supplemental drum, G', which forms a portion of the separating chamber aforesaid. The

uppermost of the tubes B have their outer- .most or forward ends terminatingin the casting H, which, while externally resembling the castings A, is devoid of partitions, although provided withjopenings or hand-holes a, which correspond to the openings or. hand-holesc in the castings A. This casting, moreover, extends beyond the sides of the tubular 'portions ofthe boiler, forming shoulders F, which rest upon the adjacent brick-work walls of the shell of the boiler, and thereby assist to support the steam drum or chamberG. The interiorof the casting H communicates by'a suitable opening,

J, with the forward end of the drum or separating-chamber G, the opening of the said opening J into the interior of the said drum or separating-chamber being above the norlnal waterline within the said drum or chamber. Each end of the supplemental drum G at the rear of the boiler has its interiorconnectingwith the upper end of a vertical pipe, K, the lower end of which communicates with the interior of the ends of a hollow bottom casting, M, which corresponds to the casting H at the upper part of the front end of the boiler, and which receives the lower or rearmost end of the lowermost tube, B, in the same manner that the casting H receives the upper forward end of the'uppermost of said tubes.A This casting M communicates by suitable passages or openings with a mud-drum, L, placed below the same. The castingM and the mud-drum L may, however, be formed in one casting, the interior of the one communicating with the interiorof the other. The lowermost of the castings A has its ends-that is to say, the sides of theboiler-extended in the same manner as the corresponding parts of the casting I', and embedded in the brick-work sides of the shell of the boiler in such manner as not only to assist in sustaining the weight of the front end of the boiler, but also to provide waterchambers b" at those portions where the impact of the flame from the tire-box is nost severe.

In thel operation of the boiler the water passed into the mud-drum L, orinto any other suitable portion of the boiler, as may be 'preferred, circulates from the lowest of the tubes to the uppermost, and is thence injected into the drum orseparating-chamber G, above the normal water-line ofthe latter, and, plunging downward from the opening of the pipe J to thel said water level, affords a ready escape lfor the steam from the mass of water, thereby insuring dry steam in the upper part of the drum or separating-chamber G and its supplemental drum G', the water freed of steam then descending to the vertical pipes K into` the casting M', thence into the lowermost ot' thetubes B, and then upward again in a continuous and substantially uniform circulation, the horizontal level of the water in the tubes B being maintained by the substantial communication between the tubes established by "the openings b beneath each of the partitions 'a in each of the castings, the heat mean- While communicated from the tire in the firebox and from the products of combustion, circulating as hereinbefore explained, being applied to the heating of the tubes with substantial regularity throughout, and avoiding any spaces where the gases can remain stationary, and thereby, so to speak, lbecome dead for all heating purposes. rIhe brick casing or shell of the boiler is so extended to the sides of the -drum or separating-chamber G as to provide- IOO les

IIO

a flue, N, underneath and along the sides of the drum G', and underneath the supplemental drum G', thereby affording additional' heat to the water contained in the said drum and supplemental drum.

In order vthat the boiler may be properly blown oft' at the front` and back, respectively, the hollow castings of brick are connected together in the manner indicated in Fig. 5-that is to say, the interior of the topmost casting has its bottom connected with the bottom ot' the casting next below by a pipe, a, While the said casting next below is connected with the one beneath it by a similar pipe, u. In practice these pipes ushoulthalternate at opposite ends of the castings.

It will be observed that the castings of the front are all connected together, and that by means of the pipes u and the openings b a communication exists virtually throughout the interior of the whole of the front of the boiler, and in like manner throughoutthewhole ot' IZO the interior of the rear ot' the boiler, so that when the boiler is blown 0E at thefront and rear, respectively, the entire interior of the boiler may be blown out, whereas if such casting of the front was not made to comlnunicate with all the others, as just described, the said front could not be blown out complete, the same remark applying to the vrear of the boiler.

It is to be observed that the parts which I have herein designated as castings, although intended to be ordinarily made of cast-iron, may, if preferred, be made of wrought sheet metal, although this will incur greater expense and moredifcultyin manufacture. Further,when desired, any cast metal may be substituted in place of the cast-iron.

One or more of the castings which constitute, as herenbefore explainedthe front and rear ends of the boiler is provided with passages u', the sides, bottom, and top of said openings being of course closed, and said openings beingalso provided with any suitable kind of 'cover or plate, the attachment ofsaid cover or plate being merely a matter of mechanical judgment and requiring no specific description. These openings u afford access to the tubes and also to the horizontal partitions D and G, in order that the tubes, partitions, Src., may, when desired, be readily cleaned.

It is to be understood that for the purposes of this present application I do not claim the several combinations of parts set forth in the claims of my former application led August ll,`A. D. 1882, numbered 69,089, inasmuch as the same are claimed in and designed to be secured by Letters Patent to be issued in pursuance of said former application; but

What I herein claim as my invention is- 1. The combination of the boiler-tubes B, superposed transverse] y continuous castings A,constructed withinternalpartitions,a.,dividing each of the said castings into a series of compartments, and extended below the pointsf of connection of the tubes to provide waterspaces, all substantially as and for the purpose herein set forth.

2. The combinatiomwith the boiler-,tubes B, of transversely-continuous castings A, constructed with internal partitions, a, dividing each casting intoaseriesofchambers,and having openings b beneath each of the said partitions a, extending substantially to the bottom of said chambers, to insure connection between the several compartments of each casting and to permit the complete withdrawal of water from said chambers, allsnbstantially as and for the purpose herein set forth.

3. The combination, with theinternal chambered castings, A, the tubes B, and the brickwork shell or casing, of the upper and lower castings, extended, as shown at b and I, to support respectively the lower and upper portions of the boiler, and at the same time afford water-spaces at the places exposed to the 'impact of dame, all substantially as and for the purpose herein set forth.

4. The combination, when arranged in relation substantially as described,with the boilertubes B, of the castings A, provided with internal partitions, a, dividing each of said castings into a series of chambers connected by openings beneath said partitions, opening J, and steam-drum or separating-chamber G, of the vertical tubes K and casting M, whereby provision is made for t-he return of the water from the steam-'drum or separating-chamber to the lowermost of the series ofpipes B, all substantially as and for the purpose herein set forth.

5. The combination of boiler-tubes B, castings A,ha\'ing internal partitions, a, and openings or passages b,the steam-drum or separating-chamber Gr, the casting H, the opening J, extending from the casting H to a point above the normal water-line of the separating-chamber G, the vertical return-pipes K, the casting M, and mud-drum L, all substantially as and for the purpose herein set forth.

JOHN W. VAN DYKE.`

Witnesses:

EDWARD A. HoLLEY, RUDOLF H. BJILLMAN. 

